WASHINGTON: The US State Department told the Ukrainian government to refrain from hitting US interests following a Ukrainian attack on the Russian port of Novorossiysk on the Black Sea, Kyiv’s ambassador to Washington said on Tuesday. Ambassador Olha Stefanishyna described the message as a demarche, a formal, official message, but declined to elaborate on how it was received and whether she was summoned by the State Department. She said Ukraine had taken note of the communication. The State Department declined to comment.